/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_CSKY_BITOPS_H#define __ASM_CSKY_BITOPS_H #include <linux/compiler.h>#include <asm/barrier.h> /* * asm-generic/bitops/ffs.h */static inline __attribute_const__ int ffs(int x){ if (!x) return 0; asm volatile ( "brev %0\n" "ff1 %0\n" "addi %0, 1\n" : "=&r"(x) : "0"(x)); return x;} /* * asm-generic/bitops/__ffs.h */static __always_inline __attribute_const__ unsigned long __ffs(unsigned long x){ asm volatile ( "brev %0\n" "ff1 %0\n" : "=&r"(x) : "0"(x)); return x;} /* * asm-generic/bitops/fls.h */static __always_inline __attribute_const__ int fls(unsigned int x){ asm volatile( "ff1 %0\n" : "=&r"(x) : "0"(x)); return (32 - x);} /* * asm-generic/bitops/__fls.h */static __always_inline __attribute_const__ unsigned long __fls(unsigned long x){ return fls(x) - 1;} #include <asm-generic/bitops/ffz.h>#include <asm-generic/bitops/fls64.h> #ifndef _LINUX_BITOPS_H#error only <linux/bitops.h> can be included directly#endif #include <asm-generic/bitops/sched.h>#include <asm-generic/bitops/hweight.h>#include <asm-generic/bitops/lock.h>#include <asm-generic/bitops/atomic.h> /* * bug fix, why only could use atomic!!!! */#include <asm-generic/bitops/non-atomic.h> #include <asm-generic/bitops/le.h>#include <asm-generic/bitops/ext2-atomic.h>#endif /* __ASM_CSKY_BITOPS_H */
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_CSKY_BITOPS_H
#define __ASM_CSKY_BITOPS_H
#include <linux/compiler.h>
#include <asm/barrier.h>
/*
* asm-generic/bitops/ffs.h
*/
static inline __attribute_const__ int ffs(int x)
{
if (!x)
return 0;
asm volatile (
"brev %0\n"
"ff1 %0\n"
"addi %0, 1\n"
: "=&r"(x)
: "0"(x));
return x;
}
/*
* asm-generic/bitops/__ffs.h
*/
static __always_inline __attribute_const__ unsigned long __ffs(unsigned long x)
{
asm volatile (
"brev %0\n"
"ff1 %0\n"
: "=&r"(x)
: "0"(x));
return x;
}
/*
* asm-generic/bitops/fls.h
*/
static __always_inline __attribute_const__ int fls(unsigned int x)
{
asm volatile(
"ff1 %0\n"
: "=&r"(x)
: "0"(x));
return (32 - x);
}
/*
* asm-generic/bitops/__fls.h
*/
static __always_inline __attribute_const__ unsigned long __fls(unsigned long x)
{
return fls(x) - 1;
}
#include <asm-generic/bitops/ffz.h>
#include <asm-generic/bitops/fls64.h>
#ifndef _LINUX_BITOPS_H
#error only <linux/bitops.h> can be included directly
#endif
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/atomic.h>
/*
* bug fix, why only could use atomic!!!!
*/
#include <asm-generic/bitops/non-atomic.h>
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#endif /* __ASM_CSKY_BITOPS_H */